Table 3 Atomic ratio of all elements calculated with the intensity of the high-resolution spectra.

From: Adsorptive removal of phosphate from water with biochar from acacia tree modified with iron and magnesium oxides

Atomic ratio (%)

C

O

Fe

Mg

P

S1

87.8

12.2

–

–

–

S2

28.7

46.4

3.1

21.8

–

S3

34.1

43.3

1.1

15.6

5.9

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